Pat egy régebbi lakója volt a Vault 13-nak, aki aärroyo tagjává vált, és a Vault Dweller hitvese lett. The name is intentionally androgynous as the Vault Dweller could be male or female. Together with him/her, she/he led the tribe and helped to make it thrive. She/he died years before the Vault Dweller wrote his/her memoirs.